Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S261638AbUF3TGZ (ORCPT ); Wed, 30 Jun 2004 15:06:25 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S261252AbUF3TGF (ORCPT ); Wed, 30 Jun 2004 15:06:05 -0400 Received: from gate.crashing.org ([63.228.1.57]:57836 "EHLO gate.crashing.org") by vger.kernel.org with ESMTP id S261159AbUF3TGB (ORCPT ); Wed, 30 Jun 2004 15:06:01 -0400 Subject: Re: [PATCH] PPC64: lockfix for rtas error log From: Benjamin Herrenschmidt To: Olof Johansson Cc: linas@austin.ibm.com, paulus@au1.ibm.com, Paul Mackerras , linuxppc64-dev , Linux Kernel list In-Reply-To: <40E30E50.3040401@austin.ibm.com> References: <20040629175007.P21634@forte.austin.ibm.com> <1088559864.1906.9.camel@gaston> <20040630123637.S21634@forte.austin.ibm.com> <1088621248.1920.43.camel@gaston> <40E30E50.3040401@austin.ibm.com> Content-Type: text/plain Message-Id: <1088622136.1921.51.camel@gaston> Mime-Version: 1.0 X-Mailer: Ximian Evolution 1.4.6 Date: Wed, 30 Jun 2004 14:02:17 -0500 Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 658 Lines: 17 > Isn't the global buffer used since it's in BSS, and as such, in low > memory, guaranteed to be below 4GB? RTAS has limitations that restricts > any passed-in buffers to be addressable as 32-bit real mode pointers, right? The global buffer is still used within the spinlocked region for RTAS itself, the patch just uses a local buffer and copies into it from the global one before releasing the lock. Ben. - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/